CN102152770A - Rear-end collision preventing device arranged at rear lower part of large and medium-sized heavy truck - Google Patents

Abstract

The invention relates to a tail-collision prevention device for the rear lower part of a large and medium-sized truck. The device includes a horizontal support device (1) arranged on both sides of the truck frame (8), a boom (7), ) on the rear side of the swing arm (3) that can swing backward and the anti-collision frame (2) connected thereto, the fixing seat (4) connected to the rear end of the truck frame (8), the swing arm (3) It is movably connected with the fixed seat (4) and connected to the support plate (5) at the lower part of the tail end of the truck frame (8). The invention prevents the car from getting into the bottom of the truck and prevents the passenger area of the car from colliding with the rear of the truck.

Description

Anti-rear-collision device for the rear lower part of large and medium-sized trucks

technical field

The invention relates to an anti-collision device at the rear lower part of a truck, especially suitable for large and medium-sized trucks (more than 5 tons).

Background technique

At present, car accidents often occur in high-grade highways and urban expressways in my country where cars collide with trucks, causing serious casualties. Although many trucks are equipped with flat baffles at the rear to prevent cars from rear-end collisions, the collision speed of rear-end cars is often faster and the collision energy is larger. Insufficient and insufficient protection range, it is difficult to prevent cars from getting into the rear of large and medium-sized trucks. The damage to the front of the car is often small, but the A-pillar and the rear passenger area suffer serious damage. Moreover, when the truck runs into unfavorable terrain or obstacles, there is a possibility of collision with the above-mentioned fixed plane baffle.

Authorized patents CN 1123465C and CN 1116185C respectively design two types of movable rear-end collision prevention devices for trucks, which better solve the anti-collision problem for low-speed rear-end automobiles. However, the strength of the support structure of the above two types of anti-rear-collision devices is insufficient. When a car rear-ends at a faster speed, it cannot be prevented from getting into the rear of the truck, and it is difficult to effectively protect the drivers and passengers of the car. Moreover, the above-mentioned two types of devices have complex structures. It is difficult to add or refit, and it is not easy to promote.

Contents of the invention

Technical problem: The technical problem to be solved by the present invention is to provide a rear-end anti-collision device at the lower part of a large and medium-sized truck. It is a swing arm structure that can effectively capture and withstand the impact of the front of the car on the lower rear part of the truck. And the horizontal support structure that transmits the impact force, relying on the effective support of the rear wheel set of the truck, the impact energy is absorbed by this device and the plastic deformation of the high rigidity part of the front of the car, preventing the car from getting into the bottom of the truck and preventing the passenger area of the car Collision with the rear of the truck. Moreover, when the truck encounters unfavorable terrain or obstacles during driving, the swing arm structure can also be lifted freely.

Technical solution: In order to solve the above technical problems, the present invention provides a rear lower anti-collision device for large and medium-sized trucks. The device includes horizontal support devices arranged on both sides of the truck frame, booms, The side swing arm that can swing backward and the anti-collision frame connected with it, the fixed seat connected to the rear end of the truck frame, the swing arm and the fixed seat are flexibly connected, and the support connected to the lower part of the truck frame tail end There is no fixed connection between the support plate and the swing arm; among them,

The horizontal support device includes a steel pipe, a front baffle and a rear baffle respectively arranged at both ends of the steel pipe, and a hoop arranged on the surface of the steel pipe. The horizontal support device is bolted to the frame of the truck by the boom, and the The horizontal impact force is effectively transmitted to the rear wheel set of the truck;

The anti-collision frame includes a channel-shaped steel plate, a steel rib plate connected to one surface of the channel-shaped steel plate, and a steel vertical plate connected to the steel rib plate; the anti-collision frame is connected to the lower section of the swing arm, and the upper section of the swing arm is connected to the fixed seat .

Preferably, the cross section of the steel pipe is circular.

Preferably, the horizontal support device is connected to the boom through a clamp, and the boom is connected to the truck frame through boom bolts.

Preferably, pin holes are provided on both sides of the fixing seat, and the pin shaft passes through the fixing seat through the pin hole, and the upper section of the swing arm is connected to the pin shaft of the fixing seat.

Beneficial effects: it can not only protect the car in severe rear-end collision, prevent the car from getting into the lower rear part of the truck after the full width, but also prevent the car from getting into the lower rear part of the truck from the side and rear to a certain extent, and prevent the car from getting into the lower rear part of the truck after the full width. It is not restricted by obstacles, simple in structure, easy to install and maintain.

Description of drawings:

Fig. 1 is a schematic side view of a typical embodiment of the present invention.

Fig. 2 is a three-dimensional schematic diagram of the horizontal support device in Fig. 1 of a typical embodiment of the present invention.

Fig. 3 is a three-dimensional schematic diagram of the framework in Fig. 1 of a typical embodiment of the present invention.

Fig. 4 is a three-dimensional schematic diagram of the support plate in Fig. 1 of a typical embodiment of the present invention.

Fig. 5 is a schematic rear view of a typical embodiment of the present invention.

Fig. 6 is a schematic top view of a typical embodiment of the present invention.

In the figure: 1, horizontal support device, 10, circular steel pipe, 11, circular steel pipe front baffle, 12, circular steel pipe rear baffle, 13, clip, 2, frame, 20, channel steel plate, 21, Steel rib plate, 22, steel vertical plate, 3, swing arm, 4, fixed seat, 41, bearing pin, 5, support plate, 51, support plate spring, 6, truck rear wheel group, 7, boom, 71, Boom bolts, 8. Truck frame, 9. Cars that may rear-end.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

The invention relates to a rear-end anti-collision device for the lower part of a large and medium-sized truck. It mainly consists of fixing a set of horizontal support devices on both sides of the tail of the frame of the large and medium-sized truck through two clamps and two booms, and fixing it on the frame of the truck. A set of swingable anti-collision frame is fixed on the rear side of the tail using a fixed seat and a swing arm; the horizontal support device is composed of a steel pipe and baffles at both ends, which can fully support a strong rear-end collision by relying on the rear wheel set of the truck; the anti-collision frame is composed of A channel steel plate, multiple steel ribs and two steel vertical plates are connected, which can fully withstand and transmit the impact force and maintain the integrity of the frame when the car collides with the rear; the anti-collision frame and the swing arm can be connected by two fixed seats Bearing pin swings backward for the axis. Therefore, it can prevent the car from getting into the rear of the truck when it collides at high speed and greatly reduces the threat of collision to the driver and passengers of the car, and has a large protection range, simple structure and easy installation.

Referring to Fig. 1-6, the anti-rear-end device for the rear lower part of a large and medium-sized truck provided by the present invention includes a horizontal support device 1 arranged on both sides of the truck frame 8, a boom 7, The swing arm 3 that can swing backward and the anti-collision frame 2 welded therewith, the fixed seat 4 welded on the rear part of the truck frame 8 tail end, the swing arm 3 and the fixed seat 4 are movable and pivotally connected, and welded on the truck frame The support plate 5 at the lower part of the tail end of the frame 8, the support plate 5 is not fixedly connected with the swing arm 3.

The horizontal support device 1 includes a steel pipe 10, a front baffle 11 and a rear baffle 12 respectively arranged at both ends of the steel pipe 10, and a hoop 13 arranged on the surface of the steel pipe 10. The horizontal support device 1 is bolted to the truck by the boom 7. On the frame 8, the horizontal impact force from the anti-collision frame 2 can be effectively transmitted to the rear wheel set 6 of the truck.

The anti-collision frame 2 includes a channel steel plate 20, a steel rib 21 welded on one surface of the channel steel plate 20 and a steel vertical plate 22 connected with the steel rib 21; the anti-collision frame 2 is welded on the lower section of the swing arm 3, and the swing The upper section of the arm 3 is pivotally connected to the fixed base 4 .

The cross section of the steel pipe 10 is circular.

The horizontal support device 1 is connected to the boom 7 through the hoop 13 , and the boom 7 is connected to the truck frame 8 through the boom bolt 71 .

The fixed seat 4 is provided with a pin shaft 41 passing through the fixed seat 4 , and the upper section of the swing arm 3 is pivotally connected to the pin shaft 41 of the fixed seat 4 . The fixed seat 4 is made of two parallel vertical channel steels, a pair of pin holes are opened on both sides thereof and the pin shaft 41 passing through the fixed seat 4 is pinned.

The horizontal support device is on both sides of the truck frame (one on each side).

This embodiment includes two sets of horizontal support devices 1, four booms 7, a frame 2, two swing arms 3, two fixing seats 4, and two support plates 5, as shown in Figures 1 to 6, wherein:

The horizontal support device 1 is fixedly connected (as: welded) on the Z-shaped boom 7 by two clamps 13 and connected on the truck frame 8 by the boom bolts 71; as shown in Figure 2, the main body of the horizontal support device is a The circular steel pipe 10, when the car 9 rear-ends, the circular steel pipe 10 and the rear wheel set 6 of the truck jointly bear the impact force, and a set of horizontal support devices can independently and stably withstand the impact force of the rear-end car without collapsing The front end of the steel pipe 10 is welded to the front baffle 11, and the rear end is welded to the rear baffle 12 to increase the contact area between the circular steel pipe 10 and the truck rear wheel group 6 and the frame 2. The front baffle 11 can also serve as the truck rear wheel group. Function of fenders. The horizontal support device is on both sides of the truck frame (one on each side).

The fixed seat 4 is a channel-shaped steel frame that is fixedly connected (such as welding) on the rear end face of the truck frame 8 with the bottom panel, and a pin shaft 41 is set on the both side plates of the channel-shaped steel fixed frame 4, which belongs to the existing technology.

The swing arm 3 is a channel-shaped steel frame that is movably pivotally connected to the pin shaft 41 with the two side plate holes of its top section, which belongs to the prior art.

The support plate 5 is fixedly connected (such as: welded) to the grooved steel plate on the rear lower end surface of the truck frame 8 with the bottom panel, so as to maintain the stability of the frame 2 and increase the bending of the swing arm 3 when the car rear-ends against the impact force. Deformation, as shown in Figures 1 and 4, there is a gap between the support plate 5 and the swing arm 3 in the natural drooping state, and a support plate spring 51 is welded on the support plate 5. When moving things, give the swing arm 3 and the frame 2 a proper buffer after the swing back.

The frame 2 is composed of a channel steel plate 20, a plurality of steel ribs 21 and two steel vertical plates 22, as shown in Figures 3 and 6, the channel steel plate 20 is welded to each steel rib 21, so that the frame 2 Fully withstand the impact force and maintain the integrity of the frame 2 when the car rear-ends; Down (when the truck is running normally, it is resisted by obstacles on the ground) with the swing arm 3 and swings backward; The tailgate 12 of the horizontal support device 1 is opposite but a certain gap is left (to prevent the horizontal support device 1 from colliding with the frame 2 under the normal running state of the truck), so as to fully transmit the impact force of the car to the frame 2 to the horizontal support on device 1.

The working principle of this embodiment is as follows:

When the car 9 collides with the frame 2 at the rear of the truck, the impact energy is sequentially composed of the deformation of the frame 2 itself, the bending of the swing arm 3, the deformation of the support plate 5, the deformation of the horizontal support device 1, and the deformation of the rear wheel set 6 of the truck. deformation absorption. Not only can it gradually slow down the impact of the car, but it can also effectively move the stress position of the rear-end car from the A-pillar and the passenger area to the stronger front, thus greatly reducing the impact of the car while preventing the car from entering the rear of the truck. The threat of collision to the occupants of the car.

When the truck itself runs forward and encounters a higher obstacle on the road, the frame 2 can swing backward with the swing arm 3 and lift up, so it can bypass the obstacle. Then, under the action of its own weight, the frame 2 and the Swing arm 3 can return to the position of steady state again.

Claims (4)

1. The utility model provides a rear-end collision prevention device of rear lower part of large and medium-sized cargo vehicle which characterized in that: the device comprises a horizontal supporting device (1) arranged on two sides of a truck frame (8), a suspension arm (7), a swing arm (3) which is arranged on the rear side of the truck frame (8) and can swing backwards, an anti-collision frame (2) connected with the swing arm, a fixed seat (4) connected to the rear part of the tail end of the truck frame (8), a support plate (5) connected to the lower part of the tail end of the truck frame (8), and a swing arm (3) movably connected with the fixed seat (4); wherein,

the horizontal supporting device (1) comprises a steel pipe (10), a front baffle (11) and a rear baffle (12) which are respectively arranged at two ends of the steel pipe (10), and a clamp (13) arranged on the surface of the steel pipe (10), wherein the horizontal supporting device (1) is bolted to a truck frame (8) through a suspension arm (7) and can effectively transmit horizontal impact force from the anti-collision frame (2) to a truck rear wheel set (6);

the anti-collision frame (2) comprises a groove-shaped steel plate (20), a steel rib plate (21) connected to the surface of the groove-shaped steel plate (20) and a steel vertical plate (22) connected with the steel rib plate (21); the anti-collision frame (2) is connected to the lower section of the swing arm (3), and the upper section of the swing arm (3) is connected to the fixed seat (4).

2. The rear-lower rear-end collision preventing device for the large-medium-sized cargo vehicle according to claim 1, wherein: the cross section of the steel pipe (10) is circular.

3. The rear-lower rear-end collision preventing device for the large-medium-sized cargo vehicle according to claim 1, wherein: the horizontal supporting device (1) is connected with the suspension arm (7) through a hoop (13), and the suspension arm (7) is connected to a truck frame (8) through a suspension arm bolt (71).

4. The rear-lower rear-end collision preventing device for the large-medium-sized cargo vehicle according to claim 1, wherein: pinhole is seted up to fixing base (4) both sides, and this fixing base (4) is run through this pinhole in round pin axle (41), and the upper segment of swing arm (3) is connected on round pin axle (41) of fixing base (4).

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